JPH03224852A - Automatic seat belt - Google Patents

Abstract

PURPOSE:To improve seat belt fastening performance by driving a motor, upon riding in a car, to rotate an arm to move a tongue plate at the end of the arm from an upper position to a lower position, and locking the tongue plate to a guide buckle fixed to the inner wall of a door to obtain the restraint condition of a crew. CONSTITUTION:When a crew opens a door to ride in a car, sits on a seat, and then the door is closed, a motor 26 is driven, the driving of this motor 26 causes an arm 31 to rotate from a its horizontal position to its vertical position via a worm gear train 25. And an anchor buckle 35 provided at the end of the arm 31 and locking a tongue plate 2 is moved from a high position 15 to a low position 16, the arm 31 presses a guide face 44, provided at the end of the rod 46 of an arm locking device 49 so as to pass through it against a spring 47. Under the passing condition, the rod 49 is projected by the spring 49 again to prevent the arm 31 from rotating in the reverse direction, so that the arm 31 is locked at the low position 16 to restrain the crew by a seat belt 10.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to an automatic seat belt that can automatically attach a seat belt to a seat of a passenger car other than a bus, a freight vehicle, or the like.

(Prior Art) Passengers on the front seats of automobiles are required to wear seat belts.

However, in order to fasten the seat belt, the manual operation of pulling the tongue plate and locking it to the anchor buckle is cumbersome and easy to forget. Therefore, it is desired to develop an automatic seatbelt that can be automatically fastened.

Regarding this point, conventionally, a device has been proposed that pulls out the shoulder seat belt upwardly and forwardly so that it can be easily taken out. In addition, a guide rail is installed in the window frame at the top of the door for getting on and off, a buckle that locks the tank plate is installed inside this guide rail, and a buckle that locks the tongue plate inside this guide rail. A device has also been proposed that automatically restrains the shoulders of the occupant by sliding the seat belt, which is stretched across the tank plate, to the rear and upper part.

(Problems to be Solved by the Invention) In the above-mentioned conventional seat belt, in the device for pulling out the shoulder seat belt upward and forward, the tank plate had to be manually locked to the anchor buckle. In addition, for those that have a guide rail at the top of the door and a sliding buckle, only the shoulder seat belt is automated, and the lap seat belt that secures the waist still must be operated manually. There was a drawback.

[Means for Solving the Problems] In order to solve the above-mentioned drawbacks of the conventional ones, the present invention provides a belt in which a tongue plate is wrapped around the seat belt, and one seat belt is disposed at the rear lower part of the inner side of the bottom seat. The other seat belt is wound around a retractor to form a lap seat belt, the other seat belt is wound around the upper part of the inner side of the back seat and wound around a belt retractor placed at the bottom of the rear to form a shoulder seat belt, and the tongue plate is attached to the inner wall of the door. The arm track hole is arranged in an arc shape so that the front side of the door inner wall is at a high position and the rear side is at a low position, The arm is rotatable by a drive motor provided at the other end of the arm, a locking device is provided at a lower position of the arm track hole, and the arm is locked by the locking device.

[For production]

With the above configuration, the present invention maintains the tongue plate at a high position when the passenger gets on and off, so that the passenger is not restrained, and when starting the vehicle, the tongue plate at the end of the arm is moved from the high position to the low position by rotating the arm by driving the motor. The driver is moved to a lower position and is locked to a guide buckle fixed to the inner wall of the door at a lower position, thereby restraining the occupant.

〔Example〕

An embodiment of the automatic seat belt of the present invention is based on the drawings. I will explain next.

FIG. 1 is a schematic perspective view showing an embodiment of the automatic seat belt of the present invention, with the body of a front seat of an automobile partially cut away. indicates that the seat belt is not restrained, and the seat on the right side in the back indicates that the seat belt is restraining the occupant.

In the left and right seats, the seat belt 1 is wound around the elongated hole at the upper end of the tongue plate 2. The seat is composed of a bottom seat 5 on which to sit and a back seat 6 as a backrest. A belt retractor 9 for winding the seat belt 1 is provided at the rear lower part of the bottom seat 5 near the inside 8.
One side of the seat belt 1 constitutes a lap seat belt 10 for restraining the waist between the belt retractor 9 and the tongue plate 2. On the other hand, a pillow support member 12 is provided at the upper part of the inner side of the back seat 6, and a belt retractor 11 is arranged at the lower rear part of the inner side of the back seat 6. and the tank plate 25- constitute a shoulder seat belt 13 that restrains the back. The shoulder seat belt 13 extends from the belt retractor 11 and is attached to a ring 1 suspended from the ceiling.
2' to the tank plate 2. Further, the belt retractors 9 and 11 may be effective rollers, grooved rollers, or the like that stop the belt from being fed out in response to sudden pulling force. Further, one belt retractor may be fixed and the other belt retractor may be extendable.

In the left and right seats, the inner wall of the door 7 has a high position 15 at the front and a low position 16 at the rear below the windshield 14.
An arcuate arm track hole 17 is provided between the two.

As shown in FIGS. 2 and 3, in the space 23 between the door outer wall 21 and the door inner wall 22 of the front door 20,
A motor 26 for driving a worm gear 25 is arranged near the door lock 24. The gear 27 is fixed to the worm gear 25 in an engaged state, and the gear shaft 28 is connected to the support member 29.
30 for rotatable support. One end of an arm 31 is fixed to the 6-end of the gear shaft 28, and an anchor buckle 35 is fixed to the other end of the arm 31 via a holding shaft 32. An arcuate arm track hole 17 is provided in the door inner wall 22, passing through the holding shaft 32, and when the worm gear 25 rotates due to the operation of the motor 26, the gears 27 rotate while meshing with each other, and when the arm 31 rotates, the holding shaft 32 slides in the arm track hole 17, and the anchor buckle 35 locking the tongue plate 2 moves between the high position 15 and the low position 16.

The anchor buckle 35 is similar to the conventional one, and for example, the one shown in FIG. 4 is used. The anchor buckle 35 has an insertion space 36 for the tongue plate 2, and has an insertion opening 37 at the top. The side wall 38 has an opening, and a pressing portion 40 provided at one end of a U-shaped locking tool 39 provided in the insertion space 36 is positioned.

The other end of the locking tool 39 is supported by the upper inner wall of the anchor buckle 35, and a locking pawl 41 that projects downward is provided on the center surface thereof. A leaf spring 42 is provided on the back surface of the locking tool 39 and abuts against the inner wall surface of the anchor buckle 35, and the locking claw 41 of the locking tool 39 is always biased in the direction of protruding. The tongue plate 2 is provided with a locking hole 43, and the tank plate 2 is attached to the anchor buckle 3.
5, the locking pawl 41 engages with the locking hole 43 and is prevented from being removed.

This engaged state is released by pushing the pressing portion 40 protruding into the opening of the anchor buckle, and the locking pawl 41 is pushed and released, allowing the occupant to release the seat belt while seated.

When the arm 31 rotates and the anchor buckle 35 for locking the tongue plate 2 comes to a low position, an arm lock device 49 is provided at a low position on the inner wall of the door to allow the arm 31 to pass through and prevent it from returning. As shown in FIG. 5, the arm locking device 49 includes a rod 46 having an inclined guide surface 44 at its tip and a locking surface 45 on its back surface, like a normal door locking mechanism, and the end of the rod 46 is always fixed by a spring 47. 4
6 is biased in the direction of pushing out. A coil 48 is provided on the lower outer periphery of the rod 46, and when the coil 48 is energized, the rod 46 is attracted and the arm is unlocked.

In the above configuration, when the door is open, the arm 8-31 is attached to the anchor buckle 3 that locks the tank plate 2.
5 is rotated in the direction of being in a high position, and the passenger sits on the seat in this state. Next, when the door is closed, a door ajar release signal from a normal door ajar detector is input, and the motor 26 is driven. The worm gear 25 is rotated by the drive of the motor 26, which rotates the gear 27 that meshes with the worm gear 25, thereby rotating the arm 31 from a horizontal position to a vertical position. As a result of the rotation, the anchor buckle 35 that locks the tank plate 2 provided at the end of the arm 31 moves from the high position 15 to the low position 16, and the arm 31 locks the rod 4 of the arm locking device 49.
The guide surface 44 provided at the end of 6 is pressed against the spring 47 to pass through. In the passing state, the rod 49 is again projected by the spring 47, preventing the arm from rotating in the opposite direction, and the arm 31 is locked in the lower position 16. In this way, the occupant can automatically fasten the seat belt.

When the occupant gets out of the car, the coil 48 of the arm lock device 49 is energized by detecting that the car is stopped, the rod 46 is attracted, the arm lock is released, the locked state is released, and the motor 26 is activated. Arm 31 by reverse rotation
The anchor buckle 35 that locks the tongue plate 2 by rotating from the vertical position to the horizontal position is in a high position, and the occupant is released from the seat belt and can get off the vehicle.

As another example, as shown in FIG.
2 is slidably mounted, and is activated by ultrasonic remote control or the like, and may be stopped by a limit switch or the like at the high position 15 end and the low position 16 end.

A guide buckle 53 is integrally attached to this sliding motor 51, as shown in FIG. A slide plate 55 tensioned by a spring 54 is slidably mounted inside the guide buckle 53, and a hole 56 is bored in the slide plate 55. As shown in FIGS. 8 and 9, a hook portion 57 of the tank plate 2 is engaged with this hole 56.

Therefore, when moving the seat belt 1 from the high position 15 to the low position 16 to keep the occupant in a restrained state, the sliding motor 51 sliding in the arm track hole 17 moves the seat belt 1 from the high position 15 to the low position 16 to move the seat belt 1 from the high position 15 to the low position 16. In the hole 56 in 53,
The hook portion 57 of the tongue plate 2 slides in a locked state.

The slide plate 55 of the guide buckle 53 shown in FIG. 7 has a knob 58 protruding from its lower end. As shown in FIG. 8, when the knob 58 collides with the anchor buckle 35, the hole 56 is lifted up against the spring 54, and the hook portion 57 of the tongue plate 2 is disengaged.

However, an instant before this disengagement, a hole 59 drilled below the tongue plate 2 is engaged with a pawl 60 of the anchor buckle 35, as shown in FIG.

This pawl 60 is pressed by a spring 61, so when it securely grips the hole 59 and rotates a gear 62 linked to the shaft of a motor (not shown) in the direction of arrow A, a bar 63 with a spiral groove is formed. Since the claw 60 is lowered in the direction of arrow A', the claw 60 resists the spring 61 and moves to the right R in FIG.
pushed to. Therefore, the claw 60 comes off the hole 59 and is disengaged, the tongue plate 2 is pulled upward T, and the hook portion 57 is locked in the hole 56 again.

Alternatively, the wheel 52 may be slidably attached to the guide buckle 53, the motor 51 may be attached outside the arm track hole 17, and the guide buckle 53 may be pulled from the motor like a winch by using a circular wire. Furthermore, instead of a motor, a linear motor or a hydraulic piston may be used to increase the sliding speed.

In addition, the locking of the guide buckle 53 and the tongue plate 2 is not limited to the hole 56 and the hook portion 57, but the two may be locked with a magnet, and the periphery of one of the magnets is positioned with a leaf spring to prevent slipping. It may also have a mechanism like this.

The number of wheels 52 may be two or three, and the number of wheels 52 may be two or three.
The wheels 52 may be installed in the width direction or in the vertical direction.
may be made to mutually spread across the entire width of the arm track hole 17.

In addition, various modifications may be made within the scope of the claims.

[Effects of the Invention] Since the present invention is configured and operates as described above, the seat belt is in the open state when the door is opened, and the seat belt is automatically fastened when the occupant sits in the seat and closes the door.

In particular, an anchor buckle is provided on the door side, and when the door is opened, the tank plate around which the belt is wrapped is positioned high above the door, so the belt does not get in the way when getting into the car. Further, since the arm drive mechanism is a mechanism that only rotates the arm using a normal motor, it is inexpensive and operates reliably.

[Brief explanation of drawings]

The drawings show one embodiment of the present invention, and FIG. 1 is a schematic perspective view of the front seat of an automobile equipped with an automatic seat belt according to the present invention, with the body partially cut away, and FIG. 2 is a view of the door seen from the inside. Figure 3 is a sectional view of the door, Figure 4 is a sectional view of the tongue plate engaged with the anchor buckle, Figure 5 is a sectional view of the arm lock device, and Figure 6 is the back of the sliding motor. 7 is a longitudinal sectional view of the guide buckle, FIG. 8 is a longitudinal sectional view showing the engagement state of the anchor buckle and the guide buckle, and FIG. 9 is a plan view of the tongue plate. 3 1...Seat belt 5...Bottom seat 9...Belt retractor 12...Guide roll 5...High position 7...Arm track hole 4...Door lock 6...Motor ... Arm 9 ... Locking tool 3 ... Locking hole 1 ... Sliding motor 5 ... Slide plate 2 ... Tank plate 6 ... Back seat 10 ... Lap seat belt 13.・・Shoulder seat belt 6・・Low position 2・・Door inner wall 5・・Worm gear 7・・Gear 5・・Anchor buckle・・Latching claw 9・・Arm lock device 3・・Guide buckle

Claims (1)

[Claims] Wrap a tongue plate around the seatbelt, wrap one seatbelt around the belt retractor located at the bottom of the rear on the inside of the bottom seat to create a lap seatbelt, and wrap the other seatbelt around the top of the inside of the backseat. and winding it around a belt retractor provided at the rear lower part to form a shoulder seat belt, and locking the tongue plate to an anchor buckle provided at the end of the arm protruding from the arm track hole provided in the inner wall of the door, The arm track hole is provided in an arc shape so that the front of the inner wall of the door is at a high position and the rear is at a low position, and the arm is rotatable by a drive motor provided at the other end of the arm, and the arm track is An automatic seatbelt, characterized in that a locking device is provided at a lower position of the hole, and the arm is locked by the locking device.